די מהר מצאתי את הפרוייקט הזה בגיטהב, מלפני שנתיים, נראה לגיטימי: https://github.com/soryy708/il-bank-account-validator. היתה רק בעיה קטנה: הוא כתוב ב-JS.
אז בגלל שזה נראה לי דבר שימושי, או בגלל שהיה קשה לי להאמין שזה לא זמין לציבור, אולי בגלל השעה... בכל מקרה, נתתי ל ChatGPT לעשות את התרגום הראשוני ל-VB, כמובן שאח"כ הייתי צריך להוסיף ולתקן כמה דברים (חריגות אינדקסים במערכים, הוספת פונקציה במקום השמה ישירה למערך, החלפה של Integer ל-Long, ריפוד באפסים, ועוד כמה שטויות של בורות מלאכותית)
בסופו של דבר, בדקתי את הקוד מול כמה מספרי חשבונות בנק שמפורסמים ברשת (למשל כאן) וקיבלתי תוצאה תקינה.
אז אם אתם משתמשים בקוד, ראוי שתתנו כוכב בגיטהב לפרוייקט הנ"ל. (אין לי שום קשר אליו)
צריך לפתוח מודול חדש ולהדביק את הקוד הבא:
Option Explicit
Function ValidateAccount(bankNumber As Long, branchNumber As Long, accountNumber As Long) As Boolean
' Input validation:
If Not IsNonNegativeLong(bankNumber) Then
ValidateAccount = False
Exit Function
End If
If Not IsNonNegativeLong(branchNumber) Then
ValidateAccount = False
Exit Function
End If
If Not IsNonNegativeLong(accountNumber) Then
ValidateAccount = False
Exit Function
End If
' Supported banks
Const YAHAV As Long = 4
Const POST As Long = 9
Const LEUMI As Long = 10
Const DISCOUNT As Long = 11
Const HAPOALIM As Long = 12
Const IGUD As Long = 13
Const OTSAR_AHAYAL As Long = 14
Const MERCANTILE As Long = 17
Const MIZRAHI_TEFAHOT As Long = 20
Const CITIBANK As Long = 22
Const BEINLEUMI As Long = 31
Const ARAVEI_ISRAELI As Long = 34
Const MASAD As Long = 46
Const POALEI_AGUDAT_ISRAEL As Long = 52
' Adjust branch number For Mizrahi Tefahot
If bankNumber = MIZRAHI_TEFAHOT Then
If branchNumber > 400 Then
branchNumber = branchNumber - 400
End If
End If
Dim accountNumberDigits() As Long
Dim branchNumberDigits() As Long
accountNumberDigits = NumberDigitsToArr(CLng(accountNumber), 9)
branchNumberDigits = NumberDigitsToArr(CLng(branchNumber), 3)
' Account number validation
Dim sum As Long
Dim remainder As Long
Select Case bankNumber
Case LEUMI, IGUD, ARAVEI_ISRAELI
sum = ScalarProduct(GetSubset(accountNumberDigits, 8), ToIntArray("1,10,2,3,4,5,6,7"))
sum = sum + ScalarProduct(GetSubset(branchNumberDigits, 4), ToIntArray("8, 9, 10"))
remainder = sum Mod 100
ValidateAccount = ArrIncludes(ToIntArray("90, 72, 70, 60, 20"), remainder)
Case YAHAV, MIZRAHI_TEFAHOT, HAPOALIM
sum = ScalarProduct(GetSubset(accountNumberDigits, 6), ToIntArray("1, 2, 3, 4, 5, 6"))
sum = sum + ScalarProduct(GetSubset(branchNumberDigits, 4), ToIntArray("7, 8, 9"))
remainder = sum Mod 11
Select Case bankNumber
Case YAHAV
ValidateAccount = ArrIncludes(ToIntArray("0, 2"), remainder)
Case MIZRAHI_TEFAHOT
ValidateAccount = ArrIncludes(ToIntArray("0, 2, 4"), remainder)
Case HAPOALIM
ValidateAccount = ArrIncludes(ToIntArray("0, 2, 4, 6"), remainder)
End Select
Case DISCOUNT, MERCANTILE, BEINLEUMI, POALEI_AGUDAT_ISRAEL
sum = ScalarProduct(GetSubset(accountNumberDigits, 9), ToIntArray("1, 2, 3, 4, 5, 6, 7, 8, 9"))
remainder = sum Mod 11
Select Case bankNumber
Case DISCOUNT, MERCANTILE
ValidateAccount = ArrIncludes(ToIntArray("0, 2, 4"), remainder)
Case BEINLEUMI, POALEI_AGUDAT_ISRAEL
If ArrIncludes(ToIntArray("0, 6"), remainder) Then
ValidateAccount = True
Else
sum = ScalarProduct(GetSubset(accountNumberDigits, 6), ToIntArray("1, 2, 3, 4, 5, 6"))
remainder = sum Mod 11
ValidateAccount = ArrIncludes(ToIntArray("0, 6"), remainder)
End If
End Select
Case POST
sum = ScalarProduct(GetSubset(accountNumberDigits, 9), ToIntArray("1, 2, 3, 4, 5, 6, 7, 8, 9"))
remainder = sum Mod 10
ValidateAccount = remainder = 0
Case 54
' Jerusalem
ValidateAccount = True ' wtf?
Case CITIBANK
sum = ScalarProduct(GetSubset(accountNumberDigits, 8), ToIntArray("2, 3, 4, 5, 6, 7, 2, 3"))
ValidateAccount = (11 - sum Mod 11) = accountNumberDigits(1)
Case OTSAR_AHAYAL, MASAD
sum = ScalarProduct(GetSubset(accountNumberDigits, 6), ToIntArray("1, 2, 3, 4, 5, 6"))
sum = sum + ScalarProduct(GetSubset(branchNumberDigits, 4), ToIntArray("7, 8, 9"))
remainder = sum Mod 11
If remainder = 0 Then
ValidateAccount = True
End If
If bankNumber = MASAD Then
If remainder = 2 And ArrIncludes(ToIntArray("154, 166, 178, 181, 183, 191, 192, 503, 505, 507, 515, 516, 527, 539"), branchNumber) Then
ValidateAccount = True
End If
sum = ScalarProduct(GetSubset(accountNumberDigits, 9), ToIntArray("1, 2, 3, 4, 5, 6, 7, 8, 9"))
remainder = sum Mod 11
If remainder = 0 Then
ValidateAccount = True
Else
sum = ScalarProduct(GetSubset(accountNumberDigits, 6), ToIntArray("1, 2, 3, 4, 5, 6"))
remainder = sum Mod 11
ValidateAccount = remainder = 0
End If
End If
If bankNumber = OTSAR_AHAYAL Then
If ArrIncludes(ToIntArray("0, 2"), remainder) And ArrIncludes(ToIntArray("385, 384, 365, 347, 363, 362, 361"), branchNumber) Then
ValidateAccount = True
Elseif remainder = 4 And ArrIncludes(ToIntArray("363, 362, 361"), branchNumber) Then
ValidateAccount = True
Else
sum = ScalarProduct(GetSubset(accountNumberDigits, 9), ToIntArray("1, 2, 3, 4, 5, 6, 7, 8, 9"))
remainder = sum Mod 11
If remainder = 0 Then
ValidateAccount = True
Else
sum = ScalarProduct(GetSubset(accountNumberDigits, 6), ToIntArray("1, 2, 3, 4, 5, 6"))
remainder = sum Mod 11
ValidateAccount = remainder = 0
End If
End If
End If
End Select
End Function
Function ScalarProduct(arr1() As Long, arr2() As Long) As Long
Dim product As Long
Dim i As Long
Dim maxIndex As Integer
maxIndex = UBound(arr1)
If maxIndex > UBound(arr2) Then maxIndex = UBound(arr2)
For i = 1 To maxIndex
product = product + arr1(i) * arr2(i)
Next i
ScalarProduct = product
End Function
Function ArrIncludes(arr() As Long, val As Long) As Boolean
Dim i As Long
If Not IsEmpty(arr) Then
For i = LBound(arr) To UBound(arr)
If arr(i) = val Then
ArrIncludes = True
Exit Function
End If
Next i
End If
End Function
Function NumberDigitsToArr(num As Long, length As Long) As Long()
Dim digitsArray() As Long
ReDim digitsArray(1 To length)
Dim zeroPadding As Integer
zeroPadding = length - Len(CStr(num))
Dim i As Long
For i = 1 To zeroPadding
digitsArray(i) = 0
Next i
For i = zeroPadding + 1 To length
digitsArray(i) = num Mod 10
num = Int(num / 10)
Next i
NumberDigitsToArr = digitsArray
End Function
Function IsNonNegativeLong(num As Variant) As Boolean
If VarType(num) = vbLong And num >= 0 Then
IsNonNegativeLong = True
End If
End Function
Function GetSubset(arr() As Long, count As Long) As Long()
Dim result() As Long
ReDim result(1 To count)
Dim i As Long
For i = 1 To count
If i <= UBound(arr) Then
result(i) = arr(i)
End If
Next i
GetSubset = result
End Function
Function ToIntArray(list As String) As Long()
Dim temp() As String
temp = Split(list, ",")
Dim result() As Long
ReDim result(1 To UBound(temp) + 1)
Dim i As Integer
For i = 0 To UBound(temp)
result(i + 1) = CLng(temp(i))
Next i
ToIntArray = result
End Function
